Turquoise hue appears on Black Sea due to phytoplankton bloom
Phys.org1 min read63 words
The Black Sea sits at the boundary between Europe and Asia and connects to the Mediterranean Sea via a chain of waterways. Its surface often appears dark, but each spring and summer it transforms into a striking expanse of swirling turquoise. The OCI (Ocean Color Instrument) on NASA's PACE (Plankton, Aerosol, Cloud, ocean Ecosystem) satellite captured this image (above) on June 22, 2026.
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